CVE-2026-19668

EUVD-2026-80783
A BIND recursive resolver may experience excessive resource consumption if it encounters large numbers of a particular kind of invalid DNSSEC record.  Default limits on "max-records-per-type" and "max-types-per-name" help mitigate the exposure.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
iscCNA
5.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: 41.41%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
iscbind
9.11.0 ≤
𝑥
≤ 9.18.50
CNA
iscbind
9.20.0 ≤
𝑥
≤ 9.20.27
CNA
iscbind
9.21.0 ≤
𝑥
≤ 9.21.25
CNA
Debian logo
Debian Releases
Debian Product
Codename
bind9
bookworm
vulnerable
bookworm (security)
vulnerable
forky
1:9.20.29-1
fixed
sid
1:9.20.30-1
fixed
trixie
vulnerable
trixie (security)
1:9.20.30-1~deb13u1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
bind9
bionic
Fixed 1:9.11.3+dfsg-1ubuntu1.19+esm6
released
focal
Fixed 1:9.18.30-0ubuntu0.20.04.2+esm3
released
jammy
Fixed 1:9.18.39-0ubuntu0.22.04.7
released
noble
Fixed 1:9.18.39-0ubuntu0.24.04.8
released
resolute
Fixed 1:9.20.24-1ubuntu0.4
released
trusty
Fixed 1:9.9.5.dfsg-3ubuntu0.19+esm15
released
xenial
Fixed 1:9.10.3.dfsg.P4-8ubuntu1.19+esm11
released
isc-dhcp
bionic
needs-triage
focal
not-affected
jammy
not-affected
noble
needs-triage
resolute
needs-triage
trusty
not-affected
xenial
not-affected
bind9-libs
focal
needs-triage
jammy
needs-triage
noble
dne
resolute
dne
openSUSE logo
openSUSE / SLES Releases
openSUSE Product
Release
bind
suse enterprise sap 15 SP4
9.16.50-150400.5.70.1
fixed
suse enterprise sap 15 SP5
9.16.50-150500.8.46.1
fixed
suse enterprise sap 15 SP7
9.20.29-150700.3.32.2
fixed
suse enterprise server 15 SP4
9.16.50-150400.5.70.1
fixed
suse enterprise server 15 SP5
9.16.50-150500.8.46.1
fixed
suse enterprise server 15 SP7
9.20.29-150700.3.32.2
fixed
bind-doc
suse enterprise sap 15 SP4
9.16.50-150400.5.70.1
fixed
suse enterprise sap 15 SP5
9.16.50-150500.8.46.1
fixed
suse enterprise sap 15 SP7
9.20.29-150700.3.32.2
fixed
suse enterprise server 15 SP4
9.16.50-150400.5.70.1
fixed
suse enterprise server 15 SP5
9.16.50-150500.8.46.1
fixed
suse enterprise server 15 SP7
9.20.29-150700.3.32.2
fixed
bind-utils
suse enterprise sap 15 SP4
9.16.50-150400.5.70.1
fixed
suse enterprise sap 15 SP5
9.16.50-150500.8.46.1
fixed
suse enterprise server 15 SP4
9.16.50-150400.5.70.1
fixed
suse enterprise server 15 SP5
9.16.50-150500.8.46.1
fixed
python3-bind
suse enterprise sap 15 SP4
9.16.50-150400.5.70.1
fixed
suse enterprise sap 15 SP5
9.16.50-150500.8.46.1
fixed
suse enterprise server 15 SP4
9.16.50-150400.5.70.1
fixed
suse enterprise server 15 SP5
9.16.50-150500.8.46.1
fixed
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
bind
Amazon Linux 2023
32:9.18.50-1.amzn2023.0.5
fixed
bind-chroot
Amazon Linux 2023
32:9.18.50-1.amzn2023.0.5
fixed
bind-debuginfo
Amazon Linux 2023
32:9.18.50-1.amzn2023.0.5
fixed
bind-debugsource
Amazon Linux 2023
32:9.18.50-1.amzn2023.0.5
fixed
bind-devel
Amazon Linux 2023
32:9.18.50-1.amzn2023.0.5
fixed
bind-dnssec-utils
Amazon Linux 2023
32:9.18.50-1.amzn2023.0.5
fixed
bind-dnssec-utils-debuginfo
Amazon Linux 2023
32:9.18.50-1.amzn2023.0.5
fixed
bind-doc
Amazon Linux 2023
32:9.18.50-1.amzn2023.0.5
fixed
bind-libs
Amazon Linux 2023
32:9.18.50-1.amzn2023.0.5
fixed
bind-libs-debuginfo
Amazon Linux 2023
32:9.18.50-1.amzn2023.0.5
fixed
bind-license
Amazon Linux 2023
32:9.18.50-1.amzn2023.0.5
fixed
bind-utils
Amazon Linux 2023
32:9.18.50-1.amzn2023.0.5
fixed
bind-utils-debuginfo
Amazon Linux 2023
32:9.18.50-1.amzn2023.0.5
fixed
Azure Linux logo
Azure Linux Releases
Azure Package
Release
bind
Azure Linux 3.0
0:9.20.30-1.azl3
fixed
Common Weakness Enumeration
Vulnerability Media Exposure
References
https://downloads.isc.org/isc/bind9/9.20.29
https://downloads.isc.org/isc/bind9/9.21.26
https://kb.isc.org/docs/cve-2026-19668